[INFO] updating cached repository rongfengliang/rustdemoapp
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rongfengliang/rustdemoapp
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rongfengliang/rustdemoapp" "work/ex/beta-1.38-1/sources/1.37.0/gh/rongfengliang/rustdemoapp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/rongfengliang/rustdemoapp'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rongfengliang/rustdemoapp" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rongfengliang/rustdemoapp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rongfengliang/rustdemoapp'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0c3f2a9cb0a589928e1f68e074c690fb0815f81d
[INFO] sha for GitHub repo rongfengliang/rustdemoapp: 0c3f2a9cb0a589928e1f68e074c690fb0815f81d
[INFO] validating manifest of rongfengliang/rustdemoapp on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rongfengliang/rustdemoapp on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rongfengliang/rustdemoapp
[INFO] finished frobbing rongfengliang/rustdemoapp
[INFO] frobbed toml for rongfengliang/rustdemoapp written to work/ex/beta-1.38-1/sources/1.37.0/gh/rongfengliang/rustdemoapp/Cargo.toml
[INFO] started frobbing rongfengliang/rustdemoapp
[INFO] finished frobbing rongfengliang/rustdemoapp
[INFO] frobbed toml for rongfengliang/rustdemoapp written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rongfengliang/rustdemoapp/Cargo.toml
[INFO] crate rongfengliang/rustdemoapp already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing rongfengliang/rustdemoapp against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rongfengliang/rustdemoapp:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 74b4cf298a76924955fcd56641a95efa02e97ff531a06defc310581f1a638833
[INFO] running `"docker" "start" "-a" "74b4cf298a76924955fcd56641a95efa02e97ff531a06defc310581f1a638833"`
[INFO] [stderr]    Compiling num-traits v0.2.0
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling pest v1.0.3
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling pest_derive v1.0.3
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling serde_json v1.0.9
[INFO] [stderr]    Compiling regex v0.2.6
[INFO] [stderr]    Compiling handlebars v0.32.0
[INFO] [stderr]    Compiling first v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/main.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn appdemo(name:&str)->&str{
[INFO] [stderr]    |                ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/main.rs:15:10
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn f(n: T) {
[INFO] [stderr]    |          ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/main.rs:28:21
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn login(&self, name: &str) -> &str {
[INFO] [stderr]    |                     ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `say_demo`
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn say_demo(name: &str) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `second`
[INFO] [stderr]   --> src/main.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn second(){
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.34s
[INFO] running `"docker" "inspect" "74b4cf298a76924955fcd56641a95efa02e97ff531a06defc310581f1a638833"`
[INFO] running `"docker" "rm" "-f" "74b4cf298a76924955fcd56641a95efa02e97ff531a06defc310581f1a638833"`
[INFO] [stdout] 74b4cf298a76924955fcd56641a95efa02e97ff531a06defc310581f1a638833
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rongfengliang/rustdemoapp:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7cea7909896a906e413415d9e724f847b0f6edd22379bb983260768f0dbe626b
[INFO] running `"docker" "start" "-a" "7cea7909896a906e413415d9e724f847b0f6edd22379bb983260768f0dbe626b"`
[INFO] [stderr]    Compiling first v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/main.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn appdemo(name:&str)->&str{
[INFO] [stderr]    |                ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/main.rs:15:10
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn f(n: T) {
[INFO] [stderr]    |          ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/main.rs:28:21
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn login(&self, name: &str) -> &str {
[INFO] [stderr]    |                     ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `say_demo`
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn say_demo(name: &str) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `second`
[INFO] [stderr]   --> src/main.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn second(){
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "7cea7909896a906e413415d9e724f847b0f6edd22379bb983260768f0dbe626b"`
[INFO] running `"docker" "rm" "-f" "7cea7909896a906e413415d9e724f847b0f6edd22379bb983260768f0dbe626b"`
[INFO] [stdout] 7cea7909896a906e413415d9e724f847b0f6edd22379bb983260768f0dbe626b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rongfengliang/rustdemoapp:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] d0a42fb9b1170830a82820f1fe99bcb3f630418046999bb71c01d8d48c47e548
[INFO] running `"docker" "start" "-a" "d0a42fb9b1170830a82820f1fe99bcb3f630418046999bb71c01d8d48c47e548"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/first-51301746c17088c2
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "d0a42fb9b1170830a82820f1fe99bcb3f630418046999bb71c01d8d48c47e548"`
[INFO] running `"docker" "rm" "-f" "d0a42fb9b1170830a82820f1fe99bcb3f630418046999bb71c01d8d48c47e548"`
[INFO] [stdout] d0a42fb9b1170830a82820f1fe99bcb3f630418046999bb71c01d8d48c47e548